Home >> Jeep >> 2021 >> Grand Cherokee L Laredo, RWD >> Repair and Diagnosis >> Accessories & Equipment >> Infotainment >> Amplifier (Amp) - DTCS B143B-11 To B14B9-2B >> DTC Troubleshooting >> B1473-00-Channel 4 Audio Speaker Output - Circuit Shorted Together >> Circuits To Be Tested